Xiaoqinglong Tang can treat persistent cough and asthma with external cold and internal fluid syndrome. Xiaoqinglong Tang is a formula from the Treatise on Typhoid Fever, which has the effects of relieving exterior cold, dispersing cold, warming the lungs, and resolving fluid (promoting the flow of stagnant fluid by warming the lungs). It can treat persistent cough and wheezing with external cold and internal fluid, and also relieve symptoms such as malignant cold (fear of cold), fever, pain in the head and body, lack of sweating, and chest congestion. Most of the herbs contained in Xiaoqinglong Tang are on the warm side, therefore, it is not suitable for people with dry cough without phlegm or phlegm-heat syndrome of yin deficiency. Xiaoqinglong Tang consists of ephedra, fine pungent herbs, peony, roasted licorice, cinnamon sticks, schizandra, dried ginger and half-summer, and should be contraindicated if one is allergic to any of the ingredients of this formula. If you need to use Xiaoqinglong Tang, it is recommended to consult a professional doctor and take it under the doctor’s guidance after identification.